Sinatrarb: >> Sinatra >> 0.0.1 Security Vulnerabilities
Sinatra is a domain-specific language for creating web applications in Ruby. In versions prior to 4.2.0, there is a denial of service vulnerability in the `If-Match` and `If-None-Match` header parsing component of Sinatra, if the `etag` method is used when constructing the response. Carefully crafted input can cause `If-Match` and `If-None-Match` header parsing in Sinatra to take an unexpected amount of time, possibly resulting in a denial of service attack vector. This header is typically involved in generating the `ETag` header value. Any applications that use the `etag` method when generating a response are impacted. Version 4.2.0 fixes the issue.
CVSS Score
7.5
EPSS Score
0.001
Published
2025-10-10
Sinatra before 2.2.0 does not validate that the expanded path matches public_dir when serving static files.
CVSS Score
7.5
EPSS Score
0.005
Published
2022-05-02
Sinatra before 2.0.2 has XSS via the 400 Bad Request page that occurs upon a params parser exception.
CVSS Score
6.1
EPSS Score
0.004
Published
2018-05-31